The journal Science published an article describing a new experiment involving bumblebees. Scientists created conditions for insects in which they were able to show ingenuity and solve a difficult problem not by trial and error, but by leaps and bounds, due to sudden insight. The experiment once again confirmed that bumblebees, which were previously famous for their intelligence (and love for rolling on balls), are very smart creatures. And he also showed something more important: animals are, in principle, capable of behavior that indicates their higher level of development than skeptics believe. What was the experiment? And what does the chimpanzee from the island of Tenerife have to do with it?